/***********************************************
 This file is part of redia-lib-utils-ios
.
 
 Copyright (c) 2012, 2013 Redia A/S
 
 Redia-library-app-ios is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
 
 Redia-library-app-ios is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with redia-library-app-ios.  If not, see <http://www.gnu.org/licenses/>.
 
 *********************************************** */


#import "WebTextLength.h"

@implementation WebTextLength

+(float)measureWebBoxHeight:(UIWebView *)webview forMarker:(NSString *)marker_id
{
    NSString* retval =
    [webview stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"var fpd = document.getElementById(\"%@\");"
                                                     "var fpx = 0; var fpy = 0; var offsetLeft = 0; var offsetTop = 0; "
                                                     "while (fpd){ offsetLeft += fpd.offsetLeft; offsetTop += fpd.offsetTop; fpd = fpd.offsetParent;} "
                                                     
                                                     "if (navigator.userAgent.indexOf('Mac') != -1 && typeof document.body.leftMargin != 'undefined'){"
                                                     "  offsetLeft += document.body.leftMargin;"
                                                     "  offsetTop += document.body.topMargin;"
                                                     "}"
                                                     "offsetTop;",marker_id]];
    return [retval floatValue];
}
@end
